Title:
OPHTHALMOLOGIC APPARATUS
Document Type and Number:
WIPO Patent Application WO/2012/132339
Kind Code:
A2
Abstract:
An ophthalmologic apparatus includes a tomographic image acquisition unit configured to acquire a tomographic image of a subject's eye based on a combined beam obtained by combining a return beam from the subject's eye, which is irradiated with a measuring beam, and a reference beam corresponding to the measuring beam, an optical path length difference changing unit configured to change an optical path length difference between the measuring beam and the reference beam, and a control unit configured to, in a case where relative positions of an optical system for irradiating the subject's eye with the measuring beam and an anterior segment of the subject's eye satisfy a predetermined condition based on an image of the anterior segment, control the optical path length difference changing unit so that the optical path length difference is within a predetermined range.
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Inventors:
TAKAI MOTOYA (JP)
Application Number:
PCT/JP2012/001969
Publication Date:
October 04, 2012
Filing Date:
March 22, 2012
Export Citation:
Assignee:
CANON KK (JP)
TAKAI MOTOYA (JP)
TAKAI MOTOYA (JP)
International Classes:
A61B3/12; A61B3/10; A61B3/15
Foreign References:
| JP2009291252A | 2009-12-17 | |||
| JP2010181172A | 2010-08-19 | |||
| JPS6423134A | 1989-01-25 | |||
| JP2011079361A | 2011-04-21 |
Attorney, Agent or Firm:
ABE, Takuma et al. (30-2 Shimomaruko 3-chome, Ohta-k, Tokyo 01, JP)
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Claims: